What is differential pressure level transmitter?
What is differential pressure level transmitter?
Differential pressure transmitters are designed to measure pressure before and after the fluid encounters an interruption, such as a filter or pump. However, this pressure instrument can also be used to measure liquid levels. The market offers several methods for measuring and monitoring liquid levels.
What is the principle of differential pressure?
Any difference of pressure across the cell causes the diaphragm to flex in the direction of least pressure. The sensing diaphragm is a precision-manufactured spring element, meaning that its displacement is a predictable function of applied force.
What is DP measured in?
Differential pressure (DP) for liquid level measurement works by measuring the hydrostatic head pressure at the bottom of the vessel and the specific gravity of the liquid. The height of the liquid in inches is the pressure of the liquid column in inches of water divided by the specific gravity of the liquid.
What does DP mean in instrumentation?
Differential pressure
Differential pressure (DP) transmitters are one of the most common, versatile and most useful pressure measuring instruments in industrial instrumentation systems. A DP transmitter senses the difference in pressure between two ports and outputs a signal representing that pressure in relation to a calibrated range.
What is LRV and URV?
range-value, lower (LRV) : The lowest value of the measured variable that a device is adjusted to measure. range-value, upper (URV) : The highest value of the measured variable that a device is adjusted to measure.
Why is differential pressure used?
Differential pressure is used to determine if a pipeline has any clogs or contaminates as particles flow through orifices and filters. If part of the pipe gets clogged, it will cause a change in the pressure, which causes differential pressure to increase or decrease.
What is pressure transmitter PDF?
Summary. The PD-A is a differential pressure transducer for accurate measuring slight differential pressures. The max line pressure is 2.94 MPa. It can be used not only for differential pressure measurement, but also flow rate measurement. Rated Capacity: 10 to 200 kPa.